London, 1937 Mrs. Laura Henderson, a woman of wealth and connections, has just buried her beloved husband. And now shes bored. At 69, she is far too energetic and vital to fade into gentle widowhood. What she needs, says her friend Lady Conway, is a hobby. Collecting diamonds, perhaps? Or doing charitable works? But, to the shock of her friends she instead buys a theatre–the Windmill Theatre in the heart of Soho. She knows nothing about running it, so she hires a manager: enter Vivian Van Damm. Their love-hate relationship sparks fireworks–and historic innovations in British theatre. Van Damms idea is Revuedeville or non-stop entertainment. It is a first, and the Windmill is packed — until other theatres copy it. Then its Lauras turn to devise another first — put naked girls on stage! But as the bombing of London begins, the government threatens to close the theatre. Mrs. Hendersons fighting spirit is revealed — and so is the secret that drew her to the Windmill in the first place.